m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 34

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.2.19. Set-up procedure of two-phase pulse signal process in event counter mode,
(b15)
multiply-by-4 mode selected
Setting divide ratio
Setting count start flag
b7
b7
b7
b7
Selecting event counter mode and functions
Note 1: First set to “Reload type” operation. Once the first counting pulse has occurred,
Two-phase pulse signal processing select bit
Setting trigger select register
b7
1
1
Note 2: Set the corresponding port direction register to “0”.
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0
the timer may be changed to “Free-Run type”.
1
0
0
0
Timer A3 count start flag
Timer A4 count start flag
Timer A3 two-phase pulse signal processing select bit
Timer A4 two-phase pulse signal processing select bit
b0
(b8)
b0
b0
1
b0
b0
1 : Two-phase pulse signal processing enabled
1 : Two-phase pulse signal processing enabled
0 (Must always be “0” when using two-phase pulse signal processing)
0 (Must always be “0” when using two-phase pulse signal processing)
1 (Must always be “1” when using two-phase pulse signal processing)
0 (Must always be “0” when using two-phase pulse signal processing)
Count operation type select bit (Note 1)
b7
Selection of event counter mode
Timer A3 event/trigger select bit
Timer A4 event/trigger select bit
b5 b4
Two-phase pulse signal processing operation select bit
b7 b6
Count start flag [Address 0380
TABSR
0 0 : Input on TA3
1 : Free-run type
0 0 : Input on TA4
1 : Multiply-by-4 processing operation
Up/down flag [Address 0384
UDF
Trigger select register [Address 0383
TRGSR
Timer Ai mode register (i= 3, 4) [Address 0399
TAiMR (i= 3, 4)
Can be set to 0000
Start count
IN
IN
is selected (Note 2)
is selected (Note 2)
b0
16
16
Timer A3 register [Address 038D
Timer A4 register [Address 038F
to FFFF
16
]
]
16
16
]
16
, 039A
16
]
16
16
, 038E
, 038C
16
16
] TA4
] TA3
2. Timer A